著者

土居 浩 中村 精紀 望月 由武人 徳永 仁 吉田 陽一 大橋 元一郎 井田 正博

出版者

日本脊髄外科学会

雑誌

脊髄外科 (ISSN:09146024)

巻号頁・発行日

vol.23, no.2, pp.211-217, 2009 (Released:2017-05-11)

参考文献数

14

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Spontaneous spinal cerebrospinal fluid (CSF) leaks are an increasingly recognized cause of intracranial hypotension. Comprehensive diagnostic criteria encompassing the varied clinical and radiographic manifestations of spontaneous intracranial hypotension are not available. In this report the authors review the diagnosis of the point of cerebrospinal fluid leak. The major presenting symptoms include postural headaches, nausea, vomiting, and diplopia. Often, there is no history of traumatic injury. The most common cranial magnetic resonance (MR) imaging features include pachymeningeal gadolinium enhancement. MR myelography is a non invasive method to detect CSF leakage, however, extradural hyperintensity on MR myelography is non-specific for CSF. Fat-saturated T2-weighted imaging and post contrast T1-weighted imaging should be added to confirm CSF leakage. On spinal MR images, meningeal cysts and extradural venous plexus are frequently misdiagnosed as CSF leakage. In cases in which symptoms are severe and refractory to less invasive measures, surgical intervention is indicated. Recently, some authors reported the identification of upper cervical epidural fluid collections as a false localizing sign in patients with spontaneous intracranial hypotension (SIH) and this has provided significant insight into the selection of management options. However, herein we report on true C1-2 CSF leakage. We examined a group of consecutive patients with 25 SIH and 13 posttraumatic CSF hypovolemia and investigated clinical, MRI, CT myelography, and radioisotope findings and therapeutic outcomes of this syndrome.

著者

土居 浩 中村 精紀 望月 由武人 徳永 仁 吉田 陽一 大橋 元一郎 井田 正博

出版者

日本脊髄外科学会

雑誌

脊髄外科 (ISSN:09146024)

巻号頁・発行日

vol.23, no.2, pp.211-217, 2009

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<p>  Spontaneous spinal cerebrospinal fluid (CSF) leaks are an increasingly recognized cause of intracranial hypotension. Comprehensive diagnostic criteria encompassing the varied clinical and radiographic manifestations of spontaneous intracranial hypotension are not available. In this report the authors review the diagnosis of the point of cerebrospinal fluid leak. The major presenting symptoms include postural headaches, nausea, vomiting, and diplopia. Often, there is no history of traumatic injury. The most common cranial magnetic resonance (MR) imaging features include pachymeningeal gadolinium enhancement. MR myelography is a non invasive method to detect CSF leakage, however, extradural hyperintensity on MR myelography is non-specific for CSF. Fat-saturated T2-weighted imaging and post contrast T1-weighted imaging should be added to confirm CSF leakage. On spinal MR images, meningeal cysts and extradural venous plexus are frequently misdiagnosed as CSF leakage. In cases in which symptoms are severe and refractory to less invasive measures, surgical intervention is indicated. Recently, some authors reported the identification of upper cervical epidural fluid collections as a false localizing sign in patients with spontaneous intracranial hypotension (SIH) and this has provided significant insight into the selection of management options. However, herein we report on true C1-2 CSF leakage. We examined a group of consecutive patients with 25 SIH and 13 posttraumatic CSF hypovolemia and investigated clinical, MRI, CT myelography, and radioisotope findings and therapeutic outcomes of this syndrome.</p>

著者

野中 洋一 角 真佐武 佐々木 裕亮 田中 将大 大橋 元一郎

出版者

日本脳神経外科コングレス

雑誌

脳神経外科ジャーナル

巻号頁・発行日

vol.26, no.8, pp.597-609, 2017

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<p> 囊胞性聴神経鞘腫 (cystic vestibular schwannoma) は, 充実性聴神経鞘腫と比較して臨床像や腫瘍特性が異なり, そのため手術においては特有の難しさが存在するといわれている. それゆえ最大径が40mmを超えるような巨大囊胞性腫瘍の手術においては, 標準的なアプローチのみで切除することが困難な場合もある. Transmastoid approachは側頭骨錐体部を立体的に切削することで, 小脳の圧排なしに小脳橋角部へアクセスすることができる確立されたアプローチではあるものの, 解剖学的な制限のため術野としては決して広くはない. しかし側頭開頭や外側後頭下開頭などと組み合わせることで, 広範囲かつ多方向的な術野展開 (multidirectional approach) が可能となるため, 視認性や操作性の向上につながる. 本稿では巨大囊胞性聴神経鞘腫に対して用いたcombined transmastoid approachの有用性, 手術成績, 合併症などについて概説する.</p>